Flashing and counterflashing for roofs, etc.



H. C. MAXWELL. FLASHING AN D COUNTEBFLASHING FOR ROOFS, ETC. APPLICATIONmen 1AN.'2o, 1921.

4H]. QLQS'T/D Patented June 13 N22.

2 SHEETSSHEET l.

i WWW 150a H. C. MAXWELL.

FLASHING AND COUNTERFLASHING FOR ROOFS, ETC.

APPLICATLON FILED JAN-20,1921- ]Patented June 13, 1922.

2 SHEETS-SHEET 2.

UNHTEE) STATES HERBERT C. MAXWELL, 0F CLEVELAND, OHIO.

FLASHING AND COUNTERFLASHING FOR ROOFS, ETC.

release.

To allwhomit may concern.

Be it known that I. HERBERT C. MAXWELL, a citizen of the United States.and a resident of Cleveland, county of Cuyahoga, and State of Ohio, haveinvented a new and useful Improvement in Flashing and Counterflashingfor Roofs, Etc.. of which the following is a specification, theprinciple of the invention being herein explained and the best mode inwhich I have contemplated applying that principle, so as to distinguishit from other inventions.

The present improvements relate, as indicated, to roof construction, andmore particularly to the construction of and means of attachment forso-called flashing or counterfla'shing, such as is used to prevent theentrance of moisture at the line of junction between a roof and adjacentupstanding portion of the building proper. Thus such flashing orcounter-flashing is employed along the junction of a roof with a parapetwall, and around a chimney, dormer, etc. One object of the inventiqn isto provide a simple and inexpensive device of the character in question.Another object is to provide a form of securing means for the flashingsheet that will permit the latter to be readily attached or detached asoccasion may require. without disturbing the wall or roof. A furtherobject as indicated above, is to provide a device of this sort that willbe generally applicable to situations requiring weather protectivedevices of the character in hand.

Tothe accomplishment of the foregoing and related ends, the invention,then, consists of the means hereinafter fully described and particularlypointed out in the claims, the annexed drawings and the followingdescription setting forth in detail certain mechanism embodying theinvention, such disclosed means constituting, however, but one ofvarious mechanical forms in which the principle of the invention may beused.

In said annexed drawings Fig. l is a front elevation of my improvedflashing, showing same as attached to a section wall; Fig. 2 is atransverse section of the' device thus attached, taken on the planeindicated by the line 2-2, Fig. 1; Fig. 3 is a section correspondingwith that of Fig. 2, but on a smaller scale, and showing the device inassociation with a parapet wall and adjacent portion of a roof; Fi 4 isa front elevation, and Fig. 5 a side elevation, of a Specification ofLetters Patent. Pafljgntgdl Jun@ 13 1192 2 Application filed January 20,1921. Serial No. 438,564. i

dormer or like structure, showing my improyed flashing in place; Figs. 6ad are sectlons through. the latter thus installed, taken on planesindicated by the lines 6-6, F 1g. 4, and 7-7, Fig. 5, respectively; Fig.8 18 3. perspective view of my improved flashingas arranged to fit in acorner, the same being shown separately from any wall or the like; andFig. 9 is a similar perspective View of certain of the parts enteringinto such flashing when thus fitted to a corner.

A retaining strip 1 is a characteristic feature of my improved flashingconstruction, whatever the particular situation about a roof to whichthe latter is to be applied. Where it is adjacent a parapet, chimney orlike wall of masonry that the flashing is to be attached, said strip 1is simply embedded in the layer of mortar or cement between two coursesof brick at the proper height, or if the wall is of solid cementconstruction, then itis directly embedded in the material. For use insuch location, the inner edge 2 of the strip 1 is preferably bentupwardly to form a flange, and thus more firmly retain the strip inplace (see Figs. 2 and 3); whereas if the stripis tobe attached to awall covered with clapboards or shinglesthe entire body of the strip isleft flat (see Figs. 6 and 7). In any case, however, the outer edge 3 ofthe strip is bent inwardly in the form of a spiral as clearly shown inthe figures just referred to above, and the strip is attached to thewall so that this spiral re curved edge is spaced only a short distancefrom the outer face of the wall to which the strip is attached in one ofthe ways just referred to.

In connection with a parapet wall, a flashing strip 4, bent at an angleto fit in the corner between the roof 5 and parapet 6, will ordinarilybe used, and a separate counterflashing 7 utilized to seal the exposeded e of suchflashing. This strip 7 will then ta e the form' illustratedin Fig. 3, having its upper'edge 8 bent into semi-circular form, as bestshown in Fig. 2, so as to adapt the same to engage the projectingspirally curved edge 3 of the strip 1. Said strip accordingly can. beinterengaged with the strip 1 by raising same into position shown indotted outline in Fig. 2, and then swing ing it downwardly unt1l itcontacts with the wall, the width of the strip being such as to bringits lower edge below the upper edge of flashing l. lVhen the strip '7 isthus in place, by crimping the recurved edge 3'w1th a pair of pliers orotherwise, in the fashion shown in Fig. 1, the two strips 1 and 7 willbe interlocked sufficiently to prevent said last mentioned strip fromswinging out wardly except upon the exercise of con-= siderable force;that is, it will in effect be permanently held in its weather position,and yet if it ever be desired to remove such strip it can be forciblyswung back again into the position shown in dotted outline in Fig. 2 anddetached.

in the construction shown in Figs. 4 to 7 inclusive, the flashing strip10 takes the place of such counter-flashing strip 7, or the two ineffect are combined into a single strip that is bent at a suitable angleto fit between the vertical sheathing wall and the roof boards as shown.

Where the flashing or counter-flashing, as the case may be, requires tobe fitted into a corner, two strips 1 are brought together with theirmeeting edges properly beveled (see Fig. 8), and such edges may besoldered if desired before said strips are laid in the wall. Thecorresponding counter-flashing strips 7 will have their re-curved edges8 cut away at the ends which are to fit intot the angle, and the flatportions of the strips are bent to form flaps 12 (see Fig. 9) so thatthe respective end portions of the strips will overla) when the strips 7are attached to said strlps 1 so as to effectively seal the joint atsuch corner. The strips 7 may be of any width, and the lower edgethereof may be trimmed at an angle, if desired, to lit the situationpresented for instance where counter-flashing requires to be attached toa chimney adjacent a sloping roof. Such strips, as well as the strips 1,will preferably be made up in standard lengths and trimmed to fit on thejob. it will be observed that no special tools are required for suchfitting,

and that the attaching of the flashing strips, after the retaining striphas been secured in place, is little more than a manual operation. Itwill further be noted that, as above explained, should it becomenecessary, either in renewing the roof or because the flashing stripshave worn out, to remove the same, they can be turned up out of the wayor entirely detached from the retaining strips.

Qther modes of applying the principles of my invention may be employedinstead of the one explained, change being made as regards the mechanismherein disclosed, provided the means stated by any of the follow ingclaims or the equivalent of such stated means be employed.

1 therefore particularly point out and dis tinctly claim as myinvention 1. A. flashing or the like comprising a retaining stripadapted to be secured to a wall, said strip having its outer edge formedwith a downturned flange of spiral cross-section, a second strip formedwith a curved flange along its upper edge adapted to rotatively engagewith the flange on said first strip, and means interlocking said stripsagainst relative movement.

2. A flashing or the like comprising a retaining strip adapted to besecuredto a wall, said strip having its outer edge formed with adownturned flange of spiralcross-section, and a second strip formed witha curved flange along its upper edge adapted to rotatively engage withthe flange on said first strip, said flanges being crimped togethersufficiently to retain said strips in desired relative position. a

3. A flashing or the like comprising retaining strips adapted to besecured with their ends meeting at the angle in a wall, each such striphaving its outer edge formed with a downturned flange of spiralcross-section, and other strips each formed with a curved flange adaptedto rotatively engage with the flange on one of said first-named strips,the flanges on said second strips terminating short of the ends thereofdesigned to meet at such angle and such ends being bentto form flapsoverlapping the adjacent sheets.

Signed byme, this 17th day of January, 1921.

HERBERT C. MAXWELL.

